Paper bag machine attachment



March 3, 1936. A. M10505 2,032,709

PAPER .BAG MACHINE ATTACHMENT Original Filed April 15, 1933 3Sheets-Sheet l gn-vwntoz March 3, 71936. A. MIDBOE 2,032,709

PAPER BAG MACHINE ATTACHMENT 7 Original Filed April 13, 1935 3Sheets-Sheet 2 March 3, 1936.

A. MIIQBOE 2,032,709

PAPER BAG MACHINE ATTACHMENT Original Filed April 15, 1933 3Sheets-Sheet '3 Patented Mar. 3, 1936 UNITED 'STATES PAPER BAG MACHINEATTACHIHENT Albert Midboe, Philadelphia, Pa., assignor to EquitablePaper Bag Co. Inc., Brooklyn, N. Y., a corporation of New YorkApplication April 13, 1933, Serial No. 666,034 Renewed December 12, 19354 Claims.

This invention relates to an attachment for paper bag making orequivalent machine and the main object is to provide a novelconstruction which will enable the same machine to make 5 paper bags oftwo or more kinds of paper in a single operation and particularly toincorporate into the bag in a single operation, a transparent portion orwindow.

A'particular object is to provide an exceedingly simple constructionwhich may be readily brought into or out of operation with respect tothe paper making machine; a construction which may be installed inconnection with any type of bag making machine.

5 An important object is to providea construc+ tion wherein the bagwindow or'section is pasted near the draw-rollers of the machine, whichfeature overcomes a great deal of difflculty experienced in machinesnow'in existence and also enables the construction to be greatlysimplified and the cost of manufactureaccordingly lessened.

The more specific objects and advantages will become apparent from aconsideration of the description following taken in. connection withaccompanying drawings illustrating an operative embodiment.

In said drawings:--

Figure 1 is a perspective view illustrating the J attachment,

Figure 2 is a central vertical sectional view through the attachment andin connection with a fragment of a bag making machine,

Figure 3 is a front elevation of the attachment,

5 Figure 4 is a cross sectional detail taken on the line 4-4 of Figure2,

Figure 5 is a fragmentary horizontal section showing the application ofthe panel to the bag ody,

b Figure 6 is a cross section taken on line 66 of Figure 2,

Figure 7 is a perspective of the bag complete, and

Figure 8 is a cross section taken on line 8-8 of Figure '7.

Referring specifically to the drawings, the invention may be used inconnection with any type 01' paper bag making or equivalent machine,irrespective of size, and as generally suggested at A. 0! such machine,the feed rollers are shown at I0 between which a paper sheet in tubularform is normally adapted to pass and beyond which rollers of course thesevering of the tube II is eflected, and also, one end of the envelopeis bent back and pasted to the remainder thereof to close one end of theenvelope. In the present ma chine, in lieu of the paper II formingacomplete tube, it merely has its edges I 2 returned over the mainportion of the sheet and disposed in spaced relation, the paper bagmaking machine A being so adjusted that no pasting of the portions l2will occur and so that the only pasting operation will be that of theend of a complete tube to be bent back to close one end of the bag.

The present invention provides an attachment whereby as the sheet H ispassing through the machine, a panel or strip I3 is placed in engagementtherewith and pasted thereto by paste or adhesive at M, engaging theportions or flanges l2 of the sheet H, such paste l4 being subjected topressure as the tube consisting of the portion H and panel l3 passesbetween the rollers I0. After passage between the rollers ill, the tubeformed by the parts i I and I3 is of course severed and one end portionturned back and pasted to form a complete bag, such operation beingperformed by the paper bag making machine A as usual in connection withtubing used in bag manufacture.

In accordance with my invention, a frame is provided at E5 consisting ofbars l6, rigidly secured together in spaced relation by suitable meansat. Such bars are preferably suspended from a ceiling or otherwisemounted in place so that they may be readily erected or detached withrespect to the machine A.

The bars I6 at their lower ends are notched at i 8, to form bearings forthe shaft or trunnions IQ of a roll 20 around which the aforesaid paperor strip i 3 is wrapped. Suitable bars or arms 2! are fastened at 22 tothe bars I 6 and the same in turn suspend a frame 23. Frame 23 consistsof a plurality of side members 24, having elongated slots at 25 throughwhich bolts 26 pass to adjustably secure the bars to the members 2|.Journaled in the bars 24 is a shaft 21 of a roller 28 over'which thestrip l3 passes.

Bracket arms 29 extend forwardly from the vertically adjustable arms 24and they mount a rod 30. Detachably suspended on the rod 30 are aplurality of paste or adhesive receptacles 3|, each receptacle having apair of books 32 detachably engaging such rod 30. The receptacles areadjustable along the rod 30 and justed position by means of adjustablecollars 38 on said rod and coacting screws 34.

Each receptacle 3| has a roller 35 journaled therein by means of a shaft36 in a bracket 3'! carried by an overhanging portion 38 of the re- 55secured in adceptacle. Since the receptacles 3| are filled with paste oradhesive, the freely revoluble rollers 35 extend into the adhesive.Also, since the receptacles 3| are loosely suspended or pivoted on therod 30, gravity causes the periphery of the wheel 35 to engage the paperor strip l3 at the portion thereof in contact with roller 28. Thus asthe roller 28 moves and the paper moves, the wheels 35 will move and attheir peripheries apply the lines I4 of paste or adhesive. to the paperl3.

A pair of arms 40 are pivoted at Al to the lower ends of the bars 24 andat their forward ends carry a shaft 42 mounting a guide roller'43. Thepaper I3 passes under and is guided by the roller 43 into contact withthe paper sheet I l and since the adhesive I4 is on the under surface ofthe sheet I3, such sheet i3 will be smoothed or evenly applied withrespect to the sheet H and thus sheets I! and I3 eifectively pressedtogether as they pass between the feed rollers l0.

The attachment is steadied by means of bars 44 which are adjustablysecured to the bars 24 at 45, and detachably connected in any suitablemanner as at 46, to a stationary arch or other part 41 of the machine A.

It will be realized that the strip i3 may be oi a different materialfrom the strip H although if desired it may be of the same material.Usually the strip I3 is of transparent material to form a window.

Various changes may be resorted to provided they fall-within the spiritand scope of the invention. 4

I claim as my invention:--

1. An attachment of the class described having a strip supplying rollerand means to mount said strip supplying roller, a guide roller overwhich the paper passes, means. to supply adhesive adjacent opposite sideedges of the strip as it passes over the second mentioned roller,comprising a pair of adhesive applying wheels, receptacle means tocontain adhesive and in. which said wheels operate, means suspendingsaid receptacle means whereby gravity will maintain the wheels incontact with the strip, said guide roller being disposed between thestrip supplying roller and said second mentioned means, andmeans toreverse the direction of movement of the strip after leaving the guideroller and applying it to another strip below and beyond the stripsupply-'- ing roller on the side of the axis of rotation thereofopposite to the guide roller.

2. An attachment of the class described having a strip supplying rollerand means to mount said strip supplying roller, a roller over which thestrip passes and by which the strip is applied to another strip, meansto supply adhesive adjacent opposite side edges of the strip before itis engaged by the second mentioned roller, comprising a pair of adhesiveapplying wheels, receptacle means to contain adhesive and in which saidwheels operate, said second mentioned roller and means being located onopposite sides of the axis of rotation of the strip supplying roller,means suspending said receptacle means whereby gravity will maintain thewheels in contact with the strip, arms extending from the attachmentbeneath the strip supplying roller mounting said roller.

3. An attachment of the class described comprising a frame, a stripsupplying roller mounted in said frame, a second frame offset from thefirst frame, a roller on the second frame, a rod on the second frame,said strip being adapted to pass over the second mentioned roller, anadhesive applying wheel to engagethe strip, a receptacle to containadhesive in which said wheel operates, and means loosely suspending thereceptacle on said rod whereby gravity will cause the wheel to contactwith the strip.

4. An attachment of the class described comprising a. frame, a stripsupplying roller mounted in said frame, a second frame offset from thefirst frame, a roller on the second frame, a rod on the second frame,said strip being adapted to pass over the second mentioned roller, anadhesive applying wheel to engage the strip, a receptacle'to containadhesive in which said wheel operates, means loosely suspending thereceptacle on said rod whereby gravity will cause the wheel to contactwith the strip,'said means comprising hooks, means to attach the secondmentioned frame to a part of a paper making machine, and guide means forthe strip as it leaves the attachment.

ALBERT MIDBOE.

